Accumulator



FIG. 1 is a right elevational view of the accumulator;

FIG. 2 is a front elevational view thereof;

FIG. 3 is left elevational view a thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front left perspective view thereof.

The ornamental design for the accumulator, as shown and described.